Grey alder (A. incana) with collar rot caused by P. alni
Photo Gallery
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P. alni canker on gray alder  |
P. pinifolia hyphal growth  P. pinifolia pathogen growing from infected needle on selective agar |
P. cambivora sporangia  Empty sporangia of P. cambivora showing nested internal proliferation |
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P. pluvialis sporangium  Sporangium showing typical ovoid shape and semi-papillate condition |
Healthy Port Orford Cedar tree  Healthy Chamaecyparis lawsoniana trees |
P. palmivora oogonia  P. palmivora oogonia with antheridia |
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P. cactorum bleeding canker  Bleeding canker on European beech (Fagus sylvatica) |
P. pluvialis colony morphology on carrot agar  Colony morphology on carrot agar at 20 days |
P. siskiyouensis sporangium  P. siskiyouensis sporangium with lateral semi-papilla and subterminal, sub-basal insertion in the sporangiophore |
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P. cactorum sporangia  P. cactorum sporangia |
P. lateralis colony morphology on PDA  Growth morphology on PDA of Phytophthora lateralis |
P. frigida symptoms 4  Black wattle timber with symptoms of gummosis |